Answer:
A & B but if you must pick one therefore pick A
Answer:
A={1,2,3} is true statement
The movement of groups from one country,place, or locality to another
Answer:
The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt. Now, day by day new technologies are invented, causing more pollution than in the past. It is important now because we are developing in very fast steps and something should be done.
